/*
 *  Copyright 2011 SPeCS Research Group.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  under the License.
 */

package org.specs.DymaLib.Weights;

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.suikasoft.SharedLibrary.ParseUtils;

/**
 * Utility methods related to WeightTable objects.
 *
 * @author Joao Bispo
 */
public class WeightTableUtils {

   /**
    * Builds a new WeightTable from a Properties object. Uses WeightTable default
    * weight.
    *
    * @param properties
    */
   public static WeightTable build(Properties properties) {
      Map<String, Integer> weights = new HashMap<String, Integer>();
      for (String key : properties.stringPropertyNames()) {
         String stringValue = properties.getProperty(key);
         Integer value = ParseUtils.parseInteger(stringValue);
         if (value == null) {
            continue;
         }
         weights.put(key, value);
      }

      return new WeightTable(weights, WeightTable.DEFAULT_WEIGHT);
   }
}
